Discussion Forum: Thread 249602

 Author: normann1974 View Messages Posted By normann1974
 Posted: Mar 10, 2019 15:57
 Subject: Factory assembled 4624 version (glued?)
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 Topic: Catalog
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normann1974 (364)

Location:  Denmark
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I've just sorted out all my spare wheel/tire parts today. Most of the 4624
assemblies (wheel/tire) could easily be disassembled, but I've noticed that
some (10-20% of the ones I found, which amouts to about 50 pieces) are more difficult
(I must use excessive force and a tool, e.g. a pen). A few even seem impossible
to disassemble. Could all these be the factory pre-assembled wheels?

Looking closer through a magnifying glass, some wheels look either deformed/melted
or there's possibly some white glue spilling out. I don't believe they
were glued by a previous owner because I have only seen very few glued parts
in lots I've bought, and there are too many wheels that show this.

So two questions arise:

1) Are the (factory) pre-assembled wheels harder to disassemble than the later
ones that were not pre-assembled?
2) Could any of the pre-assembled parts (e.g. early versions) be glued or melted
together?

/Jan
 
 Author: randyf View Messages Posted By randyf
 Posted: Mar 10, 2019 16:43
 Subject: Re: Factory assembled 4624 version (glued?)
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 Topic: Catalog
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randyf (368)

Location:  USA, Ohio
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In Catalog, normann1974 writes:
  1) Are the (factory) pre-assembled wheels harder to disassemble than the later
ones that were not pre-assembled?

No. The preassembled wheels pop right off of the tires just like ones you would
put together yourself.

  2) Could any of the pre-assembled parts (e.g. early versions) be glued or melted
together?

Never heard of or seen any.

The parts in your image definitely look like they have been "glued" using some
sort of solvent that "melts" the exterior of an ABS part (in this case, the wheels).
I would guess methyl ethyl ketone (MEK) or something similar.

Cheers,
Randy
 Author: normann1974 View Messages Posted By normann1974
 Posted: Mar 10, 2019 19:36
 Subject: Re: Factory assembled 4624 version (glued?)
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 Topic: Catalog
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normann1974 (364)

Location:  Denmark
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Store: Normann1974
In Catalog, randyf writes:
  In Catalog, normann1974 writes:
  1) Are the (factory) pre-assembled wheels harder to disassemble than the later
ones that were not pre-assembled?

No. The preassembled wheels pop right off of the tires just like ones you would
put together yourself.

Trying to find a difference, I just disassembled one of the ones that is hard
to disassemble (I needed a pen to pop the wheel out by using force). Testing
against one of my regular 4624 tires, there is an obvious difference: The rubber
is harder (they require more force to squeeze), which explains why it's harder
to disassemble them from the wheels.

Has anyone noticed a difference in material used for the 4624 tires through time?

/Jan
 Author: randyf View Messages Posted By randyf
 Posted: Mar 11, 2019 00:37
 Subject: Re: Factory assembled 4624 version (glued?)
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 Topic: Catalog
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randyf (368)

Location:  USA, Ohio
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In Catalog, normann1974 writes:
  In Catalog, randyf writes:
  In Catalog, normann1974 writes:
  1) Are the (factory) pre-assembled wheels harder to disassemble than the later
ones that were not pre-assembled?

No. The preassembled wheels pop right off of the tires just like ones you would
put together yourself.

Trying to find a difference, I just disassembled one of the ones that is hard
to disassemble (I needed a pen to pop the wheel out by using force). Testing
against one of my regular 4624 tires, there is an obvious difference: The rubber
is harder (they require more force to squeeze), which explains why it's harder
to disassemble them from the wheels.

Has anyone noticed a difference in material used for the 4624 tires through time?

/Jan

Rubber does harden over time as the plasticizers leak out. This hardening can
be accelerated by heat and light as well as changes in the amount of cross-linking
of the polymer chains. How old are these tires?
 Author: normann1974 View Messages Posted By normann1974
 Posted: Mar 11, 2019 05:50
 Subject: Re: Factory assembled 4624 version (glued?)
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 Topic: Catalog
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normann1974 (364)

Location:  Denmark
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  Rubber does harden over time as the plasticizers leak out. This hardening can
be accelerated by heat and light as well as changes in the amount of cross-linking
of the polymer chains. How old are these tires?

I can't tell. They were found in used bricks I bought. According to BrickLink:
1984-2018 (timeline of 4624 wheel).

/Jan
 Author: elias3 View Messages Posted By elias3
 Posted: Mar 11, 2019 07:54
 Subject: Re: Factory assembled 4624 version (glued?)
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elias3 (4002)

Location:  Belgium, Oost-Vlaanderen
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In Catalog, normann1974 writes:
  
  Rubber does harden over time as the plasticizers leak out. This hardening can
be accelerated by heat and light as well as changes in the amount of cross-linking
of the polymer chains. How old are these tires?

I can't tell. They were found in used bricks I bought. According to BrickLink:
1984-2018 (timeline of 4624 wheel).

/Jan

Hi

Yes they are factory pre-assembled wheels.

The first ones that came out were glued or pressed together.
Same for the 3464c02 and 4624c01 and 4624c02.
(from 1984-85 till I think begin 90s)
Also same for the first 6015 type with the 6014a.

The rubber is also harder, the assembles are softer in rubber.


Stefaan
 Author: randyf View Messages Posted By randyf
 Posted: Mar 11, 2019 12:27
 Subject: Re: Factory assembled 4624 version (glued?)
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 Topic: Catalog
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randyf (368)

Location:  USA, Ohio
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In Catalog, elias3 writes:
  In Catalog, normann1974 writes:
  
  Rubber does harden over time as the plasticizers leak out. This hardening can
be accelerated by heat and light as well as changes in the amount of cross-linking
of the polymer chains. How old are these tires?

I can't tell. They were found in used bricks I bought. According to BrickLink:
1984-2018 (timeline of 4624 wheel).

/Jan

Hi

Yes they are factory pre-assembled wheels.

The first ones that came out were glued or pressed together.
Same for the 3464c02 and 4624c01 and 4624c02.
(from 1984-85 till I think begin 90s)
Also same for the first 6015 type with the 6014a.

The rubber is also harder, the assembles are softer in rubber.


Stefaan

Thank you for the wonderful information, Stefaan. I learned something new today!


I am sorry if you ruined many wheel/tire combos due to my lack of information,
Jan.

Cheers,
Randy
 Author: normann1974 View Messages Posted By normann1974
 Posted: Mar 11, 2019 19:44
 Subject: Re: Factory assembled 4624 version (glued?)
 Viewed: 39 times
 Topic: Catalog
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normann1974 (364)

Location:  Denmark
Member Since Contact Type Status
Oct 4, 2016 Contact Member Seller
Buying Privileges - OKSelling Privileges - OK
Store: Normann1974
In Catalog, randyf writes:
  In Catalog, elias3 writes:
  In Catalog, normann1974 writes:
  
  Rubber does harden over time as the plasticizers leak out. This hardening can
be accelerated by heat and light as well as changes in the amount of cross-linking
of the polymer chains. How old are these tires?

I can't tell. They were found in used bricks I bought. According to BrickLink:
1984-2018 (timeline of 4624 wheel).

/Jan

Hi

Yes they are factory pre-assembled wheels.

The first ones that came out were glued or pressed together.
Same for the 3464c02 and 4624c01 and 4624c02.
(from 1984-85 till I think begin 90s)
Also same for the first 6015 type with the 6014a.

The rubber is also harder, the assembles are softer in rubber.


Stefaan

Thank you for the wonderful information, Stefaan. I learned something new today!


I am sorry if you ruined many wheel/tire combos due to my lack of information,
Jan.

I didn't. I always await responses from more than one person, especially
in cases like this where I have a strong hunch that I already know the answer
myself but need confirmation.

Should new, preassembled (glued/melted) parts not be added? Along with (or instead
of), maybe a note on the items in question about some versions being difficult
or impossible to disassemble (and notes on timeline)?

/Jan
 Author: mhortar View Messages Posted By mhortar
 Posted: Mar 11, 2019 21:09
 Subject: Re: Factory assembled 4624 version (glued?)
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mhortar (805)

Location:  USA, Washington
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In Catalog, elias3 writes:
  In Catalog, normann1974 writes:
  
  Rubber does harden over time as the plasticizers leak out. This hardening can
be accelerated by heat and light as well as changes in the amount of cross-linking
of the polymer chains. How old are these tires?

I can't tell. They were found in used bricks I bought. According to BrickLink:
1984-2018 (timeline of 4624 wheel).

/Jan

Hi

Yes they are factory pre-assembled wheels.

The first ones that came out were glued or pressed together.
Same for the 3464c02 and 4624c01 and 4624c02.
(from 1984-85 till I think begin 90s)
Also same for the first 6015 type with the 6014a.

The rubber is also harder, the assembles are softer in rubber.


Stefaan

Were these only glued in certain regions? This time frame was the heyday of my
LEGO collecting as a child, but I can't ever recall seeing glued wheels (and
I took *everything* apart). I only ever bought sets from the US though.

Do you happen to recall any specific sets that would have had glued wheels? I
have a ton of sealed sets from this era and would like to try and see if any
of them might be glued.

Josh
 Author: elias3 View Messages Posted By elias3
 Posted: Mar 12, 2019 04:57
 Subject: Re: Factory assembled 4624 version (glued?)
 Viewed: 51 times
 Topic: Catalog
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elias3 (4002)

Location:  Belgium, Oost-Vlaanderen
Member Since Contact Type Status Collage
Oct 29, 2001 Contact Member Seller
Buying Privileges - OKSelling Privileges - OK
View Collage Pic
Store: Elias' Brick-store
BrickLink Translated Help Editor (?) - Dutch
In Catalog, mhortar writes:
  In Catalog, elias3 writes:
  In Catalog, normann1974 writes:
  
  Rubber does harden over time as the plasticizers leak out. This hardening can
be accelerated by heat and light as well as changes in the amount of cross-linking
of the polymer chains. How old are these tires?

I can't tell. They were found in used bricks I bought. According to BrickLink:
1984-2018 (timeline of 4624 wheel).

/Jan

Hi

Yes they are factory pre-assembled wheels.

The first ones that came out were glued or pressed together.
Same for the 3464c02 and 4624c01 and 4624c02.
(from 1984-85 till I think begin 90s)
Also same for the first 6015 type with the 6014a.

The rubber is also harder, the assembles are softer in rubber.


Stefaan

Were these only glued in certain regions? This time frame was the heyday of my
LEGO collecting as a child, but I can't ever recall seeing glued wheels (and
I took *everything* apart). I only ever bought sets from the US though.

Do you happen to recall any specific sets that would have had glued wheels? I
have a ton of sealed sets from this era and would like to try and see if any
of them might be glued.

Josh

Hi

They came assembled, that's for sure.
As I wrote: 'glued or pressed'

I had a lot 6015+6014a and I took them apart and there was a residue of glue
on them.
(6015+6014a begin 90s)

For the small wheel and tyre, when it's a harder plastic you can't remove
them.
Start begin half 80s when this new type wheel came out.

https://www.bricklink.com/catalogItemIn.asp?P=4624c02&in=S
(some inv. are not correct and the wheel ass. don't pop-up in the list)


Stefaan